US3784500A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Halogenated epoxides
Assignee: Dow Chemical Co
•
Filing: 1972-04-20
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Granted: 1974-01-08
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Expires: 1992-04-20
Abstract
Abstract TRIHALONEOPENTYL ALCOHOL IS REACTED WITH EPIHALOHYDRIN AND THEN WITH BASE TO GIVEN AN ADDUCT OF THE FORMULA 2-((X-CH2-)3-C-CH2-O-(CH2-CH(-CH2-X'')-O)N-CH2-)OXIRANE WHERE EACH X AND X'' IS INDEPENDENTLY BR OR CL AND N IS AN INTEGER OF 0 TO ABOUT 10. SUCH COMPOUNDS ARE USEFUL AS PLASTICIZERS FOR POLYVINYL CHLORIDE, AS FIRE RETARDANTS FOR POLYESTERS AND AS INTERMEDIATES.
Inventors
- 👤 C Gibbons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:59
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/15; C08K5/151; C08K5/1515; C08G; C08G65/00; C08G65/02; C08G65/04; C08G65/22; C08G65/24; C08G65/26; C08G65/2639
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-07 | 1977-07-09 | 1978-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-07 | 1981-07-09 | 1982-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-07 | 1985-07-09 | 1986-01-08 | $7700.00 | Window Closed / Lapsed |